MXPA05001589A - Cleaning wipe. - Google Patents

Abstract

The present invention relates to a cleaning wipe which is a composite of bottom layer of fibers, a center detergent film layer and a top layer of fibers. The detergent film comprises a water soluble polymer and at least one surfactant.

Description

CLEANING CLOTH Field of the Invention The present invention relates to an antibacterial dishwashing cleaning cloth which is a multi-layer fabric composite.

Background of the Invention The patent literature describes numerous cleaning cloths for both the cleaning of the body and the cleaning of hard surfaces but none describe cleaning cloths for cleaning dishes, flat items, pots and pans. U.S. Patent Nos. 5,980,931, 6,063,397 and 6,074,655 show an essentially dry disposable personal cleansing product useful for both cleaning and conditioning of the skin and hair. U.S. Patent No. 6,060,149 teaches a disposable cleaning article having a substrate comprising multiple layers.

Patents of the United States of America NOS. 5,756,612; 5,763,332; 5,908,707; 5,914,177; 5,980,922 and 6,168,852 teach cleaning compositions which are inverse emulsions.

U.S. Patent Nos. 6,183,315 and 6,183,763 teach cleaning compositions containing a proton donor agent and having an acxdxco pH. U.S. Patent Nos. 5,863,663; 5,952,043; 6,063,746 and 6,121,165 teach cleaning compositions which are oil-in-water emulsions.

Synthesis of the Invention A single-use cleaning cloth for dishwashing application comprises a composite of a preferably superior soft layer of a polyester layer perforated with a fine-fiber needle, a central layer of a detergent film and a lower layer preferably a rough thin one. of perforated polypropylene with needle.

Detailed description of the invention The present invention relates to a cleaning cloth for washing dishes, flat articles, pots, pans and hard surfaces which comprises approximately by weight: (a) 20% to 80% of a top layer of fine or rough fibers; (b) 20% to 80% of a lower layer of fine or rough fibers; (c) 5% to 40% of a central layer of a detergent film, wherein the three layers are joined together in a composite cleaning cloth, wherein the detergent film comprises approximately by weight: (i) 2% to 18% of a water soluble polymer selected from the group consisting of methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, poly (vinyl) alcohol, poly (vinyl) pyrrolidone, acid salts polyacrylic, polyacrylic / polymaleic copolymer and polyaspartic acid; (ii) 25% to 50% of at least one surfactant selected from the group consisting of alkali metal salts of fatty acids, ethoxylated nonionic surfactants, amine oxide surfactants, alkyl polyglycoside surfactants, zwitterionic surfactants, anionic surfactants, and monoalkanol amides of. C12-C14 fatty acid and mixtures thereof; (iii) 0 to 2%, more preferably 0.1% to 1.5% of a perfume, essential oil or a water insoluble organic compound such as a hydrocarbon and mixtures thereof; (iv) 0 to 15%, more preferably 0.1% to 10% of a cosurfactant selected from the group consisting of glycol ethers and short chain amphiphiles, and mixtures thereof; (v) O at 15%, more preferably from 0.1% to 10% of at least one solubilizing agent; (vi) 0 to 7%, more preferably from 0.1% to 5% of an antibacterial agent; (vii) 0 to 2.5%, more preferably from 0.1% to 2% of a proton donor agent; (viii) 0 to 6%, more preferably 0.05% to 3% of a perfume, wherein the unit dose detergent film contains less than 5% by weight of water.

The water-soluble surfactants which are used in this invention are commercially well known and include the primary aliphatic alcohol ethoxylates, the secondary aliphatic alcohol ethoxylates, the alkylphenol ethoxylates, and the ethylene oxide-propylene oxide condensates over alkanols. primary, such as Plurafacs (BASF) and condensates of ethylene oxide with fatty acid esters sorbitan such as Tweens (ICI). Organic nonionic synthetic detergents are generally the condensation products of an aromatic hydrophobic alkyl or organic aliphatic compound and hydrophilic ethylene oxide groups. Virtually any hydrophobic compound having a carboxy, ethoxy, amido or amino group with a free hydrogen attached to the nitrogen can be condensed with ethylene oxide or with the polyhydration product thereof, polyethylene glycol, to form a water-soluble non-ionic detergent. . In addition, the length of the polyethenoxy chain can be adjusted to achieve the desired balance between the hydrophobic and hydrophilic elements.

The class of non-ionic detergent includes the condensation products of a higher alcohol (for example an alkanol containing 8 to 18 carbon atoms in a straight or branched chain configuration) condensed with 5 to 30 moles of ethylene oxide, by example lauryl or myristyl alcohol condensed with 16 moles of ethylene oxide (EO), tridecanol condensed with 6 moles of ethylene oxide, myristyl alcohol condensed with about 10 moles of ethylene oxide per mole of myristyl alcohol, the product of condensation of ethylene oxide with a cut of coconut fatty alcohol containing a mixture of fatty alcohols with alkyl chains ranging from 10 to 14 carbon atoms in length and wherein the condensate contains either 6 moles of ethylene per mole of total alcohol or 9 moles of ethylene oxide per mole of alcohol and tallow alcohol ethoxylates containing 6 ethylene oxide to 11 ethylene oxide per mole of alcohol.

A preferred group of the above nonionic surfactants are the Neodol ethoxylates (Shell Company), which are higher aliphatic primary alcohols containing about 9 to 15 carbon atoms such as C8-C1 alkanol: L condensed with 8 moles of ethylene (Neodol 91-8), C12.13 alkanol with 6.5 moles of ethylene oxide (Neodol 23-6.5), C12.1S alkanol condensed with 12 moles of ethylene oxide (Neodol 25-12), C14_15 alkanol condensed with 13 moles of ethylene oxide (Neodol 45-13), and the like. Such ethoxymers have an HLB value (lipophilic hydrophobic balance) of 8-15 and give a good W emulsion, while ethoxymers with lipophilic hydrophobic balance values below 8 contain less than 5 ethyleneoxy groups and tend to be poor emulsifiers and poor detergents .

The further satisfactory water-soluble ethylene oxide condensates are the condensation products of a secondary aliphatic alcohol of 8 to 18 atoms in a straight or branched chain configuration condensed with 5 to 30 moles of ethylene oxide. Examples of the commercially available nonionic surfactants of the above type are the secondary alkanol CX1-C1S condensed with either 9 ethylene oxide (Tergitol 15-S-9) or 12 ethylene oxide (Tergitol 15-S-12) marketed by Union Carbide Other suitable nonionic surfactants include the polyethylene oxide condensates of one mole of alkyl phenol containing from 8 to 18 carbon atoms in a straight or branched chain alkyl group with 5 to 30 moles of ethylene oxide. Specific examples of the alkyl phenol ethoxylates include nonyl condensed with 9.5 moles of ethylene oxide. per mole of nonyl phenol, dinonyl phenol condensed with 12 moles of ethylene oxide per mole of phenol, dinonyl phenol condensed with 15 moles of ethylene oxide per mole of phenol and di-isoctylphenol condensed with 15 moles of ethylene oxide per mole of phenol. Commercially available nonionic surfactants of this type include Igepal CO-630 (nonyl phenol ethoxylate) marketed by GAF Corporation.

Also among the satisfying nonionic surfactants are the water-soluble condensation products of a CB-C20 alkanol with a heteric nature of ethylene oxide and propylene oxide wherein the proportion by weight of ethylene oxide to propylene oxide is from 2.5: 1 to 4: 1, preferably 2.8: 1-3.3: 1, with the total ethylene oxide and propylene oxide (including the ethanol or terminal propanol group), being from 60-85%, preferably 70 -80% by weight. Such surfactants are commercially available from BASF-Wyandotte and a particularly preferred detergent is a C10-C1S alkanol condensate with ethylene oxide and propylene oxide, the weight ratio of ethylene oxide to propylene oxide being 3: 1 and the total alkoxy content being 75% by weight.

Other suitable water soluble nonionic surfactants which are less preferred are marketed under the trade name "Pluronics". The compounds are formed by the condensation of ethylene oxide with a hydrophobic base formed by the condensation of propylene oxide with propylene glycol. The molecular weight of the hydrophobic part of the molecule is of the order of 950 to 4, 000 and preferably from 2,000 to 2,500. The addition of radical is polyoxyethylene to the hydrophobic part tends to increase the solubility of the molecule as a whole to make the surfactant soluble in water. The molecular weight of the block polymers varies from 1,000 to 15,000 and the polyethylene oxide content may comprise 20% to 80% by weight. Preferably, these surfactants will be in liquid form and satisfactory surfactants are available as classes L62 and L64.

The anionic surfactants which can be used in the detergent film of this invention are water soluble such as triethanolamine and include the sodium, potassium, ammonium and ethanolammonium salts of C 8 -C 18 alkyl sulfates such as lauryl sulfate, myristyl sulfate and the like; linear C8-C1S alkyl benzene sulfonates; C-10-C20 paraffin sulfonates; Alpha-olefin sulfonates containing about 10-24 carbon atoms; C8-C18 alkyl sulfoacetates; esters of C 8 -C 18 alkyl sulfosuccinate; C8-C1B acyl isethionate; and acyl taurates C8-C18. Preferred anionic surfactants are water-soluble C12-C16 alkyl sulfates, ethoxylated C12-C16 alkyl sulphates. the C10-C15 alkyl benzene sulfonates, the C13-C17 paraffin sulphonates and the C12-C18 alpha olefin sulphonates.

The higher alkyl mononuclear aromatic sulphonates, such as the higher alkyl benzene sulfonates containing from 9 to 18 or preferably from 9 to 16 carbon atoms in the higher alkyl group in a straight or branched chain. A preferred alkyl benzene sulfonate is a linear alkyl benzene sulfonate having a content superior of 4-phenyl (or higher) isomers and a correspondingly lower content (well below 50%) of 2-phenyl (or lower) isomers, such as those sulfonates wherein the benzene ring is attached mainly in the 3-position or higher (for example 4, 5, 6 or 7) of the alkyl group and the content of the isomers in which the benzene ring is held in position 2 or 1 is correspondingly low. Preferred materials are set forth in U.S. Patent No. 3,320,174 especially those in which the alkyls are 10 to 3 carbon atoms.

Examples of other suitable sulfonated anionic surfactants are well known. The paraffin sulfonates may be monosulfonates or di-sulfonates and are usually mixtures thereof, obtained by sulfonating paraffins of 10 to 20 carbon atoms. Preferred paraffin sulfonates are those of C12.18 carbon atom chains, and more preferably these are C14-17 chains. Paraffin sulphonates having the sulfonate group (s) distributed along the paraffin chain are described in U.S. Patent Nos. 2,503,280; 2,507,088; 3,260,744; and 3,372,188; and also in German Patent No. 735,096. Such compounds can be made to specifications and desirably the content of paraffin sulfonates outside the range C1 7 will be lower and will be minimized, as will any di- or poly-sulfonate contents.

The ethoxylated alkyl ether sulfate C8.1B surfactants have the structure: + R- (OCHCH2) nOS03 wherein n is from about 1 to about 22 more preferably from 1 to 3 and R is an alkyl group having from about 8 to about 18 carbon atoms, more preferably from 12 to 15 and natural cuts, for example , C12.14 ° ci2-is and M is an ammonium cation or a metal cation, more preferably sodium.

The ethoxylated alkyl ether sulfate can be made by sulfating the condensation product of ethylene oxide and C8.10 alkanol, and neutralizing the resulting product. The ethoxylated alkyl ether sulfates differ from one another in the number of carbon atoms in the alcohols and in the number of moles of ethylene oxide reacted with one mole of such alcohol. The preferred ethoxylated alkyl ether polyethenoxy sulfates contain 12 to 15 carbon atoms in the alcohols and in the alkyl groups thereof, for example sodium myristyl sulfate (3 ethylene oxide).

The ethoxylated alkylphenyl ether sulphates Ca_18 containing from 2 to 6 moles of ethylene oxide in the Molecules are also suitable for use in the compositions of the invention. These detergents can be prepared by reacting an alkyl phenol with 2 to 6 moles of ethylene oxide and sulfatar and neutralizing the resulting ethoxylated alkyl phenol.

The C12_20 paraffin sulfonates may be monosulfonates or di-sulfonates and are usually mixtures thereof, obtained by sulfonating paraffins of 10 to 20 carbon atoms. Preferred paraffin sulphonates are those of chains of C12-18 carbon atoms and more preferably are of C14_17 chains. Paraffin sulfonates having the sulfonate group or groups distributed along the paraffin chain are described in U.S. Patent Nos. 2,503,280; 2,505,088; 3,260,744 and 3,372,188 and also in German Patent No. 735,096. Such compounds can be made to specifications and desirably the content of paraffin sulfonates outside the range of C14_17 will be lower and will be minimized, as will any contents of di- or poly-sulfonates.

The present invention may also contain alpha olefin sulphonates, including long chain alkene sulfonates, long chain hydroxyalkane sulfonates or mixtures of alkene sulphonates and hydroxyalkane sulfonates. These alpha olefin sulphonate surfactants can be prepared in a manner known by the reaction of sulfur trioxide (S03) with long chain olefins containing from 8 to 25, preferably from 12 to 21 carbon atoms and having the formula RCH = CHR1 wherein R is a higher alkyl group of 5 to 23 carbons and R is an alkyl group of 1 to 17 carbons or hydrogen to form a mixture of sultones and alkene sulphonic acids which are then treated to convert the sultones into sulphonates. Preferred alpha olefin sulphonates contain from 14 to 16 carbon atoms in the alkyl group R and are obtained by sulfonating an o-olefin.

The long chain fatty acids are the higher aliphatic fatty acids having from about 3 to 22 carbon atoms, more preferably from about 10 to 20 carbon atoms, and especially preferably from about 12 to 18 carbon atoms. carbon, and especially preferably from 12 to 18 carbon atoms, inclusive of the carbon atom of the carboxyl group of the fatty acid. The aliphatic radical can be saturated or unsaturated and can be straight or branched. Straight chain saturated fatty acids are preferred. The mixtures of the fatty acids can be used such as those derived from natural sources, such as tallow fatty acid, coconut fatty acid, soybean fatty acid, mixtures of these acids, etc. Stearic acid and mixed fatty acids, for example stearic acid / acid palmitic, are preferred.

Thus, examples of the fatty acids include, for example, decanoic acid, dodecanoic acid, palmitic acid, myristic acid, stearic acid, behenic acid, cycloic acid, eicosanoic acid, tallow fatty acid, coconut fatty acid, fatty acid of soya, mixture of these acids, etc. Stearic acid and mixtures of fatty acids, for example stearic acid / palmitic acid are preferred.

The water-soluble zwitterionic surfactant, which can also be used, provides good foam and softness properties. The zwitterionic surfactant is a water soluble betaine having the formula: wherein Rx is an alkyl group having from 10 to 20 carbon atoms, preferably from 12 to 16 carbon atoms, or the radical 'amido: wherein R is an alkyl group having from 9 to 19 carbon atoms and a is the integer of 1 a; R2 and R3 are each alkyl groups having from 1 to 3 carbons and preferably 1 carbon; R 4 is an alkylene or hydroxyalkylene group having from 1 to 4 carbon atoms and, optionally, a hydroxyl group. Typical alkyldimethyl betaines include decyl dimethyl betaine or 2- (N-decyl-N, N-dimethyl-ammonia) acetate, coconut dimethyl betaine or 2- (N-coco N, N-dimethylammonium) acetate, myristyl dimethyl betaine, palmityl dimethyl betaine, lauryl dimethyl betaine, cetyl dimethyl betaine, stearyl dimethyl betaine, etc. Amidobetaines similarly include cocoamidoethyl betaine, cocoamidopropyl betaine and the like. A preferred betaine is coco (C8-C18) amidopropyl dimethyl betaine.

Semi-polar amine oxide nonionic surfactants comprise compounds and mixtures of the compounds having the formula: wherein Rx is an alkyl, 2-hydroxyalkyl, 3-hydroxyalkyl, or 3-alkoxy-2-hydroxypropyl radical in which alkyl and alkoxy, respectively, contain from 8 to 18 carbon atoms, R2 and R3 are each methyl, ethyl, propyl, isopropyl, 2-hydroxyethyl, 2-hydroxypropyl, or 3-hydroxypropyl and n is from 0 to 10. Amine oxides of the formula are particularly preferred: f I - .3 wherein R1 is a C12-C16 alkyl and R2 and R3 are methyl or ethyl. The above ethylene oxide condensates, the amides and amine oxides are more fully described in U.S. Patent No. 4,316,824 which is incorporated herein by reference.

The surfactants from which they can be used have a hydrophobic group containing from about 8 to about 20 carbon atoms, preferably from about 10 to about 16 carbon atoms, more preferably from about 12 to about of 14 carbon atoms, and a polysaccharide hydrophilic group containing from about 1.5 to about 10, preferably from about 1.5 to about 4, more preferably from about 1.6 to about 2.7 units removed (e.g. galactoside, glucoside, fructoside, glucosyl, fructosyl, and / or galactosyl units). Mixtures of saccharide moieties can be used in alkyl polysaccharide surfactants. The number x indicates the number of units removed in the alkyl polysaccharide surfactant. For a particular alkyl polysaccharide molecule, x can only assume integral values. In any physical sample of alkyl polysaccharide surfactants there will generally be molecules having different x-values. The physical sample can be characterized by the average value of x and this average value can assume non-integral values. In this description the values of x will be understood as being the average values. The hydrophobic group (R) can be held in the 2-, 3-, or 4- positions rather than in the -1-position, (thus giving for example glucosyl or galactosyl as opposed to glucoside or galactoside). However, the clamping through position -1, for example glucosides, galactosides, ftosOtosidas, etc., is preferred. In the preferred product the extra saccharide Units are predominantly bound to the Units removed from position -2, Subjection through positions 3-, 4-, and 6- may also occur. Optionally and less desirably there can be a polyalcoxide chain linking the hydrophobic moiety (R) and the polysaccharide chain. The preferred half of the alkoxide is ethoxide.

Typical hydrophobic groups include alkyl groups, either saturated or unsaturated, branched or unbranched containing from about 8 to about 20, preferably from about 10 to about 18 carbon atoms. Preferably, the alkyl group is a saturated straight-chain alkyl group. The alkyl group may contain up to 3 hydroxy groups and / or polyalkoxide chain may contain up to about 30, preferably less than about 10, alkoxide moieties.

Suitable alkyl polysaccharides are decyl, dodecyl, tetradecyl, pentadecyl, hexadecyl, and octadecyl, di-, tri-, tetra-, penta-, and hexaglucosides, galactosides, lactosides, fructosides, fructosils, lactosils, glucosils, and / or galactosyl and mixtures thereof.

The alkyl monosaccharides are relatively less soluble in water than the higher alkyl polysaccharides.

Cuanao are used in combination with alkyl polysaccharides, Alkyl monosaccharides solubilized in a wide range The USE of alkyl monosaccharides in combination with the alkyl polysaccharides is a preferred way of carrying out the invention. Suitable mixtures include coconut alkyl, di-, tri-, tetra-, and pentaglucosides and tallow alkyl tetra-, penta-, and hexaglucosides.

Preferred alkyl polysaccharides are the alkyl polyglucosides having the formula: 20 (CnH2nO) r (Z) x wherein Z is derived from glucose, R is a hydrophobic group selected from the group consisting of alkyl, alkyl phenyl, hydroxyalkyl phenyl, and combinations thereof in which said alkyl groups contain from about 10 to about 18, preferably from about 12 to about 14 carbon atoms; n is 2 or 3 preferably 2, r is from 0 to 10, preferably 0; and x is from 1.5 to 8, preferably from 1.5 to 4, more preferably from 1.6 to 2.7. To prepare these - compounds a long chain alcohol (R2OH) can be reacted with glucose, in the presence of an acid catalyst to form the desired glucoside. Alternatively the alkyl polyglucosides can be prepared, by a a two-step process in which a short chain alcohol (RjOH) can be reacted with glucose, in the presence of an acid catalyst to form the desired glucosite. Alternatively the alkyl polyglucosides can be prepared by a two-step process in which a short chain alcohol (C ^) is reacted with glucose or a polyglycoside (x = 2 to 4) to give a short chain alkyl glucoside (x = a 4) which can in turn be reacted with a longer chain alcohol (R2OH) to displace the short chain alcohol and obtain the desired alkyl polyglucoside. If this two step process is used, the short chain alkyl glucoside content of the final alkyl polyglucoside material should be less than 50%, preferably less than 10%, more preferably less than about 5%, more preferably of 0% of the alkyl polyglucoside.

The amount of unreacted alcohol (the content of free fatty alcohol) in the desired alkyl polysaccharide surfactant is preferably less than about 2%, more preferably less than about 0.5% by weight of the total alkyl polysaccharide. For some uses it is desirable to have the alkyl monosaccharide content of less than about 10%.

The "alkyl polysaccharide surfactant" used herein is intended to represent both the preferred glucose and galactose derived from surfactants and the less preferred alkyl polysaccharide surfactants .. Throughout this description, "alkyl polyglucoside" is used to include alkyl polyglucosides due to the stereochemistry of the extracted half that is changed during the preparation reaction.

An APG glycoside surfactant is APG 625 glycoside manufactured by Henkel Corporation of Ambler, PA. APG25 is a nonionic alkyl polyglucoside characterized by the formula: where n = 10 (2%); n = 122 (65%); n = 14 (sa-28%); n = 16 (4-8%) and n = 18 (0.5%) and x (degree of polymerization) = 1.6. APG 625 has: a pH of 6 to 10 (10% of APG 625 in distilled water); a specific gravity at 25 ° C of 1.1 g / ml; a density at 25 ° C of 9.1 pounds / gallon; a calculated lipophilic hydrophilic balance of 12.1 and a Brookfield viscosity at 35C, spindle 21, 5-10 revolutions per minute from 3,000 to 7,000 centipoises.

The detergent film present also contains a mixture of alkyl monoalkanol amide C12.14 such as lauryl monoalkanol amide and alkyl dialcanol amide C12.14 such as lauryl diethanol amide or coco diethanol amide.

As used herein and in the accompanying clauses the term "perfume" is used in its ordinary sense to refer to and include any fragrant substance not soluble in water or mixtures of substances that include natural fragrances (eg obtained by extracting flowers, herbs , fluorescent or plant), artificial (for example mixtures of natural oils or oil constituents) and (synthetically produced substance). Typically, perfumes are complex mixtures of combinations of various organic compounds such as alcohols, aldehydes, ethers, aromatics, and varying amounts of essential oils (e.g. terpenes) such as from 0% to 80%, usually from 10% at 70% by weight, the essential oils themselves being volatile odoriferous compounds and also serving to dissolve other components of the perfume.

In the present invention, the precise composition of the perfume is not of a particular consequence for cleaning performance provided that it meets the criteria of immissibility in water and that it has a pleasant smell. Naturally, of course, especially for cleaning compositions intended to be used on the spot, the perfume as well as the ingredients must be cosmetically acceptable, for example, non-toxic, hypoallergenic, etc. The present compositions show a marked improvement in ecotoxicity compared to existing commercial products.

Instead of the perfume one can use an essential oil or a water-insoluble hydrocarbon having from 6 to 18 carbon atoms such as paraffin or isoparaffin.

Suitable essential oils are selected from the group consisting of: Anethole 20/21 natural, star anise seed oil, globe brand anise seed oil, balm (Peru), basil oil (India), pepper oil black, 40/20 black pepper oleoresin, rosewood (Brazil), FOB, Borneol flakes (China), camphor oil, synthetic technical white camphor powder, cananga oil (Java), cardamom oil, oil Cassia (China), red cedar oil (China), BP, cinnamon bark oil, cinnamon leaf oil, citronella oil, clove oil, clove leaf, coriander (Russia), Coumarina 60 ° C (China), cyclamous aldehyde, diphenyl oxide, ethyl vanillin, eucalyptol, eucalyptus oil, citrus eucalyptus, fennel oil, geranium oil, ginger oil, ginger oleoresin (India), white grapefruit oil, wood oil of Guaiac, Gurjun balm, heliotropin, iso oil bornyl, isolongifolian, juniper berry oil, L-methyl acetate, lavender oil, lemon oil, lemon grass oil, distilled lime oil, Litsea Cubeba oil, Longifolian, menthol crystals, methyl cerril ketone, methyl cavicol, methyl salicylate, ambret de musk, musk ketone, musk xylol, nutmeg oil, orange oil, Patchoulli oil, peppermint oil, phenyl ethyl alcohol, pepper berry oil, pepper leaf oil, rosalina , sandalwood oil, Sandenol, sage oil, clary sage, sassafras oil, green meta oil, Spike lavender, Tagetes, tea tree oil, vanillin, vetiver oil (Java), pyrol, alocinemo, Arbanezmarca , Arbanol®, bergamot, camphene, alpha-campholenic aldehyde, 1-carbone, cineole, citral, citronellol, alpha-citronellol, citronellyl acetate, citronellil, para-cinem, dihydroanetole, dihydrocarveol, d- dihydrocarbon, dihydroline lol, dihydromircenol, dihydromircenol, dihydromercenil acetate, dihydroterpineol, dimethyloctanal, dimethyloctanol, dimethyloctanyl acetate, Estragóle, ethyl-2 methylbutyrate, Fenchol, Fenlolmarca, Florilysmarca, Geraniol, Geranyl acetate, Geranyl nitrile, Glidmintmarca mint oils, Glidoxmarca, grapefruit oils, trans-2-Hexenal, trans-2-Hexanol, cis-3-Hexenyl Isovalerate, cis-3-Hexanil-2-methylbutyrate, Hexyl Isovalerate, Hexyl-2-methylbutyrate, hydroxycitronellal, Ionone, Isobornyl Methylether, Linalool, Linalool Oxide , Linalil acetate, menthine hydroperoxide, 1-methyl acetate, methyl hexyl ether, methyl-2-methylbutyrate, 2-methylbutyl isovalerate, myrcene, Nerol, Neryl acetate, 3-octanol, 3-octyl acetate, phenyl-ethyl-2-methylbutyrate , small grain oils, cis-pinano, pinano hidroperoxide, pinanol, pine ester, pine needle oils, pine oil, alpha-pinene, beta-pinene, alpha-pinene oxide, plinol, plinyl acetate, pseudos Ionone, rodinol, rodinyl acetate, ace spices, alpha-terpinene, gamma-terpinene, terpinen-4-OL, Terpineol, Terpinolene, Terpinyl acetate, tetrahydrolinalol, tetrahydrolinallyl acetate, tetrahydromircenol, Tetralol®, tomato oils, Vitalizair, and Zestoralmaroa.

The cosurfactants used in the present inventions are glycerol, ethylene glycol, water-soluble polyethylene glycol having a molecular weight of 300 to 1,000, polypropylene glycol of the formula HO (CH3CHCH20) nH where n is a number of 2 to 18, mixed polyethylene glycol and polypropylene glycol (Synalox ) and mono 0? -0e alkyl ethers of ethylene glycol and propylene glycol, having the structural formula R (X) n0H wherein R is C ^ Cg alkyl group, X is (0CH2CH2) or (OCH2 (CH3) CH) and n is a number from 1 to 4, diethylene glycol, triethylene glycol, 1 methoxy-2-propanol, 1 methoxy-3-propanol, and 1 methoxy 2-, 3- or 4-butanol, and triethyl phosphate. Additional mixtures of two or more of the three classes of cosurfactant compounds can be employed where specific pHs are desired.

Representative members of polypropylene glycol include dipropylene glycol and polypropylene glycol having a molecular weight of 200 to 1,000, for example polypropylene glycol 400. Other satisfactory glycol ethers are ethylene glycol monobutyl ether (butyl cellosolve), diethylene glycol monobutyl ether (butyl carbitol), triethylene glycol monobutyl ether, mono, di, tri propylene glycol monobutyl ether, tetraethylene glycol monobutyl ether, mono, di, tri propylene glycol mono methyl ether, propylene glycol mono methyl ether, ethylene glycol monohexyl ether, diethylene glycol monoexethyl ether, propylene glycol tertiary butyl ether , ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, ethylene glycol monopropyl ether, ethylene glycol monopentyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ester, diethylene glycol monopentyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, triethylene glycol monopropyl ether, triethylene glycol mo nopropyl ether, triethylene glycol monopentyl ether, triethylene glycol monohexyl ether, mon, di, tripropylene glycol monoethyl ether, mono, di tripropylene glycol monopropyl ether, mono, di, tripropylene glycol monopentyl ether, mono, di, tripropylene glycol monopentyl ether, mono, di, tripropylene glycol monohexyl ether, mono, di, tributylene glycol mono methyl ether, mono, di, tributylene glycol monoethyl ether, mono, di, tributylene glycol monopropyl ether, mono, di, tributylene glycol monobutyl ether, mono, di, tributylene glycol monopentyl ether and mono, di, tributylene glycol monohexyl ether, ethylene glycol phenyl ether and 1-phenoxy-2-propanol, ethylene glycol monoacetate and dipropylene glycol propionate.

The present detergent film will contain at least one solubilizing agent selected from the group consisting of C2-5 mono, dihydroxy or polyhydroxy alkanols such as ethanol, xsopropanol, glycerol ethylene glycol, diethylene glycol, propylene glycol, and hexylene glycol and mixtures thereof. same, urea, and xylene or alkali metal buffalo sulfonates such as sodium cusme sulfonate and sodium xylene sulfonate.

The detergent film may contain polyethylene glycol which is shown by the formula: HO- (CH2 CH20) n H wherein n is from about 8 to about 225, more preferably from about 10 to about 100,000, wherein the polyethylene glycol has a molecular weight of from about 200 to about 1,000. A preferred polyethylene glycerol is PEG 1000 which is a polyethylene glycol having a molecular weight of about 1000.

The proton donor agent which can be used is selected from the group consisting of inorganic acids such as sulfuric acid and hydrochloric acid and an organic acid containing hydroxy, preferably an aliphatic hydroxy acid, wherein the hydroxy containing organic acid is selected of the group consisting of lactic acid, citric acid, salicylic acid, orthohydroxy benzoic acid or glycolic acid and mixtures thereof.

The antibacterial agents which can be used are selected from the group consisting of 3,4,4-trichloro-carbanalide, 2,4'4-trichloro-21-hydroxydiphenyl ether, C 8 -C 15 alkyl amines, alkyl benzyl dimethyl ammonium chlorides C8-Ci6 / benzalkonium chloride, C8-Ci6 dialkyl dimethyl ammonium chlorides, C8-Ci6 alkyl dimethyl ammonium chlorides and chlorohexidine and mixtures thereof. Some typical antibacterial agents useful in the present compositions are manufactured by Lonza, S.A. These are: Bardac 2180 (or 2170) which is a N-decyl-N-isonoxy-N, N-dimethyl ammonium chloride; Bardac 22 which is a didecyl dimethyl ammonium chloride; Bardac LF which is a N, N-dioctyl-N, N-dimethyl ammonium chloride; Bardac 114 which is a mixture in a 1: 1: 1 ratio of N-alkyl-N, N-didecyl-N, N-dimethyl ammonium chloride / N-alkyl-N, N-dimethyl-N-chloride ethyl ammonium; and Barquat MB-50 which is an N-alkyl-N, N-dimethyl-N-benzyl ammonium chloride. The preferred disinfecting agent is a C 8 -C 16 alkyl benzyl dimethyl ammonium chloride.

Another bacterial agent is a cationic polymer selected from the group consisting of poly (hexamethylene biguanide) hydrochloride having the structure of: HCI n where the average n = 4 to 6 and the quaternized cationic polymer having the formula of The detergent film of this invention can, if desired, also contain other components either to provide an additional effect or to make the product more attractive to the consumer. The following are mentioned by way of example: Colors or dyes in amounts up to 0.5% by weight; pH adjusting agents such as sulfuric acid or sodium hydroxide, can be used as required. Protease enzymes, amylase enzymes, and chlorine bleach compounds at a concentration of 0.1% by weight to 10% by weight can be used.

The condoms which can be used in the present compositions at a concentration of 0.005% by weight at 3% by weight, more preferably 0.01% by weight at 2.5% by weight are benzalkonium chloride; benzethonium chloride; 5-bromo-5-nitro-1, 3dioxane; 2-bromo-2-nitropropane-1,3-diol; alkyl trimethyl ammonium bromide; N- (hydroxymethyl) -N- (1,3-dihydroxymethyl-2,5-dioxo-4-imidaxolidinyl-N '- (hydroxymethyl) urea; l-3-dimethiol-5,5-dimethylhydantoin; formaldehyde; iodopropinyl butyl carbanata, butyl paraben, ethyl paraben, methyl paraben, propyl paraben, mixture of methyl isothiazolinone / methyl-chloroisothiazoline in a weight ratio of 1: 3, mixture of phenoxyethanol / butyl paraben / methyl paraben / propylparaben; 2-phenoxyethanol; three-hydroxyethyl-hexahydrotriazine; methylisothiazolinone; 5-chloro-2-methyl-4-isothiazoline-3-one; 1,2-dibromo-2,4-dicyanobutane; 1- (3-chloroalkyl) -3,5-7 triaza-azoniadamantone chloride, and sodium benzoate pH adjusting agents such as sulfuric acid or sodium hydroxide can be used as required.

The cellulosic polymer which is used in forming the detergent film is selected from the group consisting of methyl cellulose and hydroxy propyl methyl cellulose. Dow Chemical manufactures these cellulosic polymers under the name Methocel. The following table establishes the suitable Methocel polymer useful in the present invention.

Methoxil grade Hydroxypropyl Hydroxypropyl Substitute (%) degree of (%) substitution Methoxil Met ocel A 1.8 30 Methocel B 1.9 29 0.23 8.5 Methocel F 1.8 28 0.13 5.0 Methocel J 1.3 18 0.82 27 Methocel K 1.4 22 0.21 8.1 Methocel 310 Series 2.0 25 0.8 25 The detergent film is made by preparing the aqueous cleaning solution of the cleaning composition and a second aqueous polymeric solution of the water-soluble polymer at 4% by weight to 18% by weight. The cleaning composition solution and the polymer solution are mixed by simple mixing at room temperature in a weight ratio of 4: 1 to 1: 4 to form a setting solution. The setting solution is set in a carrier film such as PET silicone or a siliconized paper and allows drying by evaporation at room temperature to form the unit dose detergent film having a thickness of about 1.0 ml. to around 12 mis.

The upper and lower layers may have different textures and abrasivities. The different textures can result from the use of different combinations of materials or the use of different manufacturing processes or a combination thereof. A dual texture substrate can be made to provide the advantage of a more abrasive side for difficult cleaning to remove dirt. A softer side can be used for porcelain and fine china. The substrate must not dissolve or break in the water. It is the vehicle for the delivery of the cleaning composition to the dishes, flat items, pots and pans. The use of the substrate improves foam, cleaning and removal of grease.

A wide variety of materials can be used for both the upper and lower layers. It must have a sufficient wet strength, abrasiveness, sponginess and porosity. Examples include non-woven materials, woven materials and hydroentangled materials.

Examples of non-woven materials include 100% Little Rapids Corporation Class 1804 cellulose wadding, 100% polypropylene needle-punched material NB 701-2.8-W / R from American Non-wovens Corporation, a blend of cellulose and Synthetic fibers-Hydraspun 8579 from Ahlstrom Fibre Composites, and 0% Viscose / 30% PES Code 9881 from PGI Nonwovens Polymer Corporation.

Another useful material is manufactured by Jacob Hi-Lidro Rouge. This is a composition material comprising 65/35 layer bonded with hydroentangled polyester / viscose rayon yarn with a hydrolamellar bonded polyester layer.

The product of the present invention comprises multiple layers that can be ultrasonically bonded. Alternatively, the layers can be joined together by needle punching, thermal bonding, mechanical bonding, chemical bonding or sonic bonding before the coating is applied.

The following examples illustrate the liquid cleaning compositions of the described invention. Unless otherwise specified, all percentages are by weight. The exemplified compositions are illustrative only and do not limit the scope of the invention. Unless otherwise specified, the proportions in the examples and elsewhere in the description are by weight.

The thin film detergent is made by mixing a detergent composition with a solution of the film-forming polymer selected from the group consisting of methyl cellulose and hydroxy propyl methyl cellulose and mixtures thereof, at a given ratio and setting the resulting solution in a film of supports not soluble in adequate water and let it dry. The support film can be PET, siliconized paper or any film not soluble in water that does not stick to the finished product after drying. The proportion of the detergent composition for the film-forming polymer solution can be varied in order to control the thickness, flexibility, strength (for example brittleness) and a dissolution rate. Once the polymer / detergent mixture is set on a substrate not soluble in water, the product is allowed to air dry or by passing it through a hot air drying station. After drying the thin film of detergent / polymer base, the product can be stripped / released from said substrate not soluble in water and cut to the desired shape and size.

Example 1 The following detergent film (in% by weight) was prepared by a simple charge blending at room temperature of a detergent solution and a cellulose polymer solution (15% in water). The ratio of liquid from dishes to polymer solution in this example is 50:50.

Part A - Hydroxypropylmethyl Cellulose Polymer Water solution Part B - Liquid Detergent for Dishes Mg (LAS) 2 25 NaLAS 1.6 NH4 (AE0S-1.3E0) 9 Alkyl polyglucose (APG 1.7 L / monoethanol amide 2.2 SXS 3.35 HEDTA 0.28 Ethanol 4.9 Fragrance 0.55 Water Balance Part C - Thin Film of Detergent Part A 50 Part B 50 Example 2 The water soluble detergent film made as described above is then used to make a single-use dishwashing cleaner according to the following procedure. The suitable cleaning diaper material, such as those described above, can be used. The invention is made by sandwiching the thin film of water soluble detergent between two pieces of cleaning cloth material and heat sealing the pack to form a bag containing the thin detergent film therein. It is also contemplated to make the thin water soluble detergent film a layer of the actual cleaning cloth construction, thereby eliminating the need to make a heat sealed bag.

The described cleaning cloth implement shows desirable properties in comparison to wet cleaning cloths made by absorbing liquid detergents within the cleaning cloth material. For example, the invention described shows a more even release of the detergent during use than the traditional wet cleaning cloth. This is confirmed by the following test. The cleaning cloth is submerged 5 times in 800 milliliters of tap water at 25 ° C, the cleaning cloth is squeezed between each dive. This process generates foam in the beaker and is repeated with fresh water beakers until the foam is visually observed. Since the generation of foam is a signal to the consumer that the product is still working, the more beakers in which the foam has been generated, a more acceptable product for the consumer is given. The results are shown in Table 3.

Table 3. Foam Generation Test in Picudo Glass The data shows that due to the even and controlled dissolution of the thin film of water soluble detergent, the release of the dishwashing composition is controlled and of longer duration against the traditional wet cleaning cloth with absorbent detergent. The latter released most of the detergent the first time the cleaning cloth is submerged in water and does not give so many dives with visible foam generation. This is the case even when the total amount of detergent on the cleaning cloth is 5 times greater than that of the dry detergent film cleaning cloth.

The total amount of detergent delivered by the current invention can be modified in several ways. For example more than one layer of water soluble thin film can be incorporated in the cleaning cloth, or the thickness or load of the thin film detergent.

Claims (12)

1. A cleaning cloth which comprises approximately by weight: (a) - 20% to 80% of the upper fiber layer; (b) 20% to 80% of a lower fiber layer; (c) 5% to 40% of a central layer of a detergent film, wherein the top, middle and bottom layers are joined together and the detergent film comprises approximately by weight: (i) 2% to 18% water-soluble polymer selected from the group consisting of methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, poly (vinyl) alcohol, poly (vinyl) pyrrolidone, polyacrylic acid salts , polyacrylic / polymaleic copolymer and polyaspartic acid; Y (ii) 25% to 50% of at least one surfactant selected from the group consisting of alkali metal salts of non-ionic ethoxylated fatty acid surfactants, amine oxide surfactants, alkyl polyglycoside surfactants, zwitterionic surfactants, anionic surfactants and ammonium monoalkanol fatty acid Ca2-Ci4 and mixtures thereof.

2. A cleaning cloth as claimed in Clause 1 characterized by a detergent film also includes 0.1% by weight at 2% by weight of a proton donor agent.

3. A cleaning cloth as claimed in clause 2 characterized in that said detergent film further includes 0.1% by weight to 5% by weight of an antibacterial agent.

4. A cleaning cloth as claimed in clause 3 characterized in that said detergent film further includes 0.1% by weight to 10% by weight of at least one solubilizing agent.

5. A cleaning cloth as claimed in clause 4 characterized in that said detergent film further includes 0.1% by weight to 1.5% by weight of a perfume or essential oil.

6. A cleaning cloth as claimed in clause 1 characterized in that said detergent film further includes 0.1% by weight to 10% by weight of a cosurfactant.

7. A cleaning cloth as claimed in clause 6 characterized in that said detergent film further includes 0.1% by weight to 1.5% by weight of a perfume, an essential oil or an organic compound insoluble in water.

8. A cleaning cloth as claimed in clause 7 characterized in that said detergent film further includes 0.1% by weight at 2% by weight of a proton donor agent.

9. A cleaning cloth as claimed in clause 8 characterized in that said detergent film further includes 0.1% by weight to 5% by weight of an antibacterial agent.

10. A cleaning cloth as claimed in clause 1 characterized in that said detergent film further includes 5% by weight to 40% by weight of at least one inorganic reinforcing salt.

11. A cleaning cloth as claimed in clause 10 characterized in that, the detergent film further includes 0.1% by weight to 10% by weight of an organic bleaching compound.

12. A cleaning cloth as claimed in clause 11 characterized in that said detergent film further includes 0.1% by weight to 10% by weight of an enzyme.